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DOT/FMCSA RIN: 2126-AC91 Publication ID: Spring 2025 
Title: ●Parts and Accessories Necessary for Safe Operation; Fuel Tank Overfill Restriction 
Abstract:

FMCSA proposes to remove the requirement in the Federal Motor Carrier Safety Regulations (FMCSRs) that a liquid fuel tank manufactured on or after January 1, 1973, be designed and constructed so that it cannot be filled, in a normal filling operation, with a quantity of fuel that exceeds 95 percent of the tank’s liquid capacity. This proposal is in response to a petition for rulemaking from the Commercial Vehicle Safety Alliance. The proposed change would remove an unnecessary and outdated requirement from the FMCSRs.

 
Agency: Department of Transportation(DOT)  Priority: Substantive, Nonsignificant 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: No 
EO 14192 Designation: Deregulatory 
CFR Citation: 49 CFR 393   
Legal Authority: Not Yet Determined   
Legal Deadline:  None
Timetable:
Action Date FR Cite
NPRM  05/30/2025  90 FR 22923   
NPRM Comment Period End  07/29/2025 
Final Rule  12/00/2025 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Wendy Liberante
Department of Transportation
Federal Motor Carrier Safety Administration
1200 New Jersey Avenue SE,
Washington, DC 20590
Phone:202 366-2551
Email: wendy.liberante@dot.gov